Improve notification behavior

Only allow one notification at a time. Use a basic notification for
normal messages, and image notification for image messages, and a list
notification when there are multiple unread messages.

// FREEBIE

js/chromium.js

@@ -170,6 +170,49 @@
         }
     };
 
+    if (chrome) {
+        chrome.notifications.onClicked.addListener(function() {
+            chrome.notifications.clear('signal');
+            Whisper.Notifications.onclick();
+        });
+        chrome.notifications.onButtonClicked.addListener(function() {
+            chrome.notifications.clear('signal');
+            Whisper.Notifications.clear();
+            getInboxCollection().each(function(model) {
+                if (model.get('unreadCount') > 0) {
+                    model.markRead();
+                }
+            });
+        });
+        chrome.notifications.onClosed.addListener(function(id, byUser) {
+            if (byUser) {
+                Whisper.Notifications.clear();
+            }
+        });
+    }
+    extension.notify = function(options) {
+        if (chrome) {
+            chrome.notifications.clear('signal');
+            chrome.notifications.create('signal', {
+                type    : options.type,
+                title   : options.title,
+                message : options.message || '', // required
+                iconUrl : options.iconUrl,
+                items   : options.items,
+                buttons : options.buttons
+            });
+        } else {
+            var notification = new Notification(options.title, {
+                body : options.message,
+                icon : options.iconUrl,
+                tag  : 'signal'
+            });
+            notification.onclick = function() {
+                Whisper.Notifications.onclick();
+            };
+        }
+    };
+
     if (chrome.runtime.onInstalled) {
         chrome.runtime.onInstalled.addListener(function(options) {
             if (options.reason === 'install') {

js/models/messages.js

@@ -61,9 +61,20 @@
 
             return this.get('body');
         },
+        getNotificationText: function() {
+            var description = this.getDescription();
+            if (description) {
+                return description;
+            }
+            if (this.get('attachments').length > 0) {
+                return 'Media message';
+            }
+
+            return '';
+        },
         updateImageUrl: function() {
             this.revokeImageUrl();
-            var attachment = message.get('attachments')[0];
+            var attachment = this.get('attachments')[0];
             if (attachment) {
                 var blob = new Blob([attachment.data], {
                     type: attachment.contentType

js/notifications.js

@@ -5,7 +5,10 @@
     'use strict';
     window.Whisper = window.Whisper || {};
 
-    Whisper.Notifications = {
+    Whisper.Notifications = new (Backbone.Collection.extend({
+        initialize: function() {
+            this.on('add', this.update);
+        },
         isEnabled: function(callback) {
             return Notification.permission === 'granted' &&
                 !storage.get('disable-notifications');
@@ -18,7 +21,57 @@
         },
         disable: function() {
             storage.put('disable-notifications', true);
+        },
+        onclick: function() {
+            var last = this.last();
+            if (!last) {
+                openInbox();
+                return;
+            }
+            var conversation = ConversationController.create({
+                id: last.get('conversationId')
+            });
+            openConversation(conversation);
+            this.clear();
+        },
+        update: function(options) {
+            if (this.length > 1) {
+                var iconUrl = 'images/icon_128.png';
+                var conversationIds = _.uniq(this.map(function(m) {
+                    return m.get('conversationId');
+                }));
+                if (conversationIds.length === 1) {
+                    iconUrl = this.at(0).get('iconUrl');
                 }
+                extension.notify({
+                    type    : 'list',
+                    iconUrl : iconUrl,
+                    title   : '' + this.length + ' new messages',
+                    message : 'Most recent from ' + this.last().get('title'),
+                    items   : this.map(function(m) {
+                        return {
+                            title   : m.get('title'),
+                            message : m.get('message')
                         };
-
+                    }),
+                    buttons : [{
+                        title   : 'Mark all as read',
+                        iconUrl : 'images/check.png'
+                    }]
+                });
+            } else {
+                var m = this.at(0);
+                extension.notify({
+                    type     : 'basic',
+                    title    : m.get('title'),
+                    message  : m.get('message'),
+                    iconUrl  : m.get('iconUrl'),
+                    imageUrl : m.get('imageUrl')
+                });
+            }
+        },
+        clear: function() {
+            this.reset([]);
+        }
+    }))();
 })();

js/panel_controller.js

@@ -93,15 +93,14 @@
             var sender = ConversationController.create({id: message.get('source')});
             conversation.fetch().then(function() {
                 sender.fetch().then(function() {
-                    sender.getNotificationIcon().then(function(icon) {
-                        var notification = new Notification(sender.getTitle(), {
-                            body: message.getDescription(),
-                            icon: icon,
-                            tag: conversation.id
+                    sender.getNotificationIcon().then(function(iconUrl) {
+                        Whisper.Notifications.add({
+                            title    : sender.getTitle(),
+                            message  : message.getNotificationText(),
+                            iconUrl  : iconUrl,
+                            imageUrl : message.getImageUrl(),
+                            conversationId: conversation.id
                         });
-                        notification.onclick = function() {
-                            openConversation(conversation);
-                        };
                     });
                 });
             });
@@ -152,7 +151,7 @@
     };
 
     var open;
-    function openConversation(conversation) {
+    window.openConversation = function(conversation) {
         if (inboxOpened === true) {
             var appWindow = chrome.app.window.get(inboxWindowId);
             appWindow.contentWindow.openConversation(conversation);
@@ -160,7 +159,7 @@
             open = conversation;
             openInbox();
         }
-    }
+    };
     window.getOpenConversation = function() {
         var o = open;
         open = null;